Pith Number

pith:ROPRHMY3

pith:2009:ROPRHMY3READIWMJ4UMLWXUFJZ

not attested not anchored not stored refs pending

The lost siblings of the Sun

S. Portegies Zwart (Amsterdam)

arxiv:0903.0237 v1 · 2009-03-02 · astro-ph.GA · astro-ph.EP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ROPRHMY3READIWMJ4UMLWXUFJZ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T04:29:16.226857Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8b9f13b31b8900345989e518bb5e854e7f3ea63b3d40c0ee5db6576a41437524

Aliases

arxiv: 0903.0237 · arxiv_version: 0903.0237v1 · doi: 10.48550/arxiv.0903.0237 · pith_short_12: ROPRHMY3READ · pith_short_16: ROPRHMY3READIWMJ · pith_short_8: ROPRHMY3

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/ROPRHMY3READIWMJ4UMLWXUFJZ \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 8b9f13b31b8900345989e518bb5e854e7f3ea63b3d40c0ee5db6576a41437524

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1310cbe40b1f4a2d3fc11e7c07c2c804a08209a090de7c9f8a0a650c49d0089d",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-03-02T09:00:11Z",
    "title_canon_sha256": "51785d423893542b723b862dbb8febe87fc8b1b416f2e587f8a079f50a67969d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.0237",
    "kind": "arxiv",
    "version": 1
  }
}